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Cisco Network Modules Hardware Installation Guide
OL-2485-20
Chapter 25 Connecting Cisco Network Analysis Modules
Online Insertion and Removal with a Cisco Network Analysis Module
Figure 25-2 Connecting a Cisco Network Analysis Module to a Fast Ethernet Hub
Online Insertion and Removal with a Cisco Network Analysis
Module
Some Cisco modular access routers allow you to replace network modules without switching off the
router or affecting the operation of other interfaces. This feature is called
online insertion and removal
(OIR). OIR of network modules provides uninterrupted operation to network users, maintains routing
information, and ensures session preservation.
Caution
Unlike other network modules, network analysis modules use hard disks. Online removal of disks
without proper shutdown can result in file system corruption and might render the disk unusable. The
operating system on the network analysis module must be shut down in an orderly fashion before the
network module is removed.
Caution
Cisco routers support OIR with similar modules only. If you remove a network module, install another
module exactly like it in its place. If you remove a two-slot network module (along with any installed
WAN or voice interface cards), install another module and card combination exactly like it.
For a description of informational and error messages that may appear on the console during this
procedure, see the hardware installation guide for your type of router.
To perform online removal of a network analysis module and insertion of a replacement, follow these
steps with the router in privileged EXEC mode:
Step 1
Perform a graceful halt of the network analysis module by using the following command:
Router#
service-module analysis-module
slot
/
0
shutdown
Shutdown is used for Online removal of Service Module.
Do you want to proceed with shutdown? [confirm]
Use service module resent command to recover from shutdown
Step 2
Press
Enter
to confirm the request. Wait for the following status message (it may take a minute or two):
%SERVICEMODULE-5-SHUTDOWN2:Service module NAM-Sensor1/0 shutdown complete
NM-NAM
EN
PWR
FastEthernet 0
DISK
LINK
ACT
WARNING!!
Shut down NM-NAM application
before removing or power cycling.
CF
98727
Fast Ethernet
RJ-45
Fast Ethernet hub
Category 5
or UTP cable